HomeEmission Control > SensorsWalker 250-24425 Oxygen Sensor - Downstream
Part #: 250-24425

Walker 250-24425 Oxygen Sensor - Downstream

Walker Products OE, Downstream
13 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Downstream
Fitment: Nissan, Pickup, Frontier, and Xterra
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24425 Oxygen Sensor for Nissan Vehicles

The Walker 250-24425 oxygen sensor is designed specifically for Nissan Frontier, Pickup, and Xterra models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

  • Heated oxygen sensor with 4-wire design for precise readings
  • Specific fit for Nissan Frontier, Pickup, and Xterra
  • 47.36-inch wiring harness length for flexible installation
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon female connector for secure connection
  • Wire gauge measurement of 20 for durability and signal integrity
  • Overall length of 50.91 inches to accommodate vehicle layout

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24425) is engineered to meet the exact specifications of Nissan Frontier, Pickup, and Xterra models. Featuring a heated sensor type, it provides faster warm-up times and more accurate oxygen level readings compared to unheated sensors. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring reliable operation under various driving conditions.

The sensor includes a 47.36-inch wiring harness, allowing for straightforward routing and connection within the vehicle’s engine bay. Its radiused polygon female connector is designed for a secure and precise fit, reducing the risk of connection issues. The threaded mounting type with an 18.0 mm diameter ensures compatibility with the original sensor location, simplifying replacement.

Walker Products OE Brand Line Information

Walker Products OE is a product line focused on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is part of that line, providing Nissan vehicle owners with a sensor that matches factory specifications for fit, form, and function. Using Walker Products OE parts helps maintain vehicle emissions compliance and engine efficiency.

Common Applications and Issues Addressed

  • Restores proper air-fuel mixture readings for Nissan Frontier, Pickup, and Xterra
  • Resolves check engine light triggers related to oxygen sensor faults
  • Improves fuel economy by providing accurate exhaust gas data
  • Helps reduce harmful emissions by ensuring correct sensor operation
  • Prevents rough idling and engine performance issues caused by faulty sensors

Installation Notes and Tips

When installing the Walker 250-24425 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness before installation. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. This part number 250-24425 undergoes rigorous testing to comply with emissions regulations. Warranty coverage details should be confirmed with the parts provider or manufacturer documentation.

BrandWalker
Part Number250-24425
PositionWalker Products OE, Downstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length50.91
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length47.36

This part fits 13 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2009NissanPickup2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2000NissanFrontier2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products OE
2000NissanFrontier2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products OE
2000NissanFrontier2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products OE
2000NissanXterra2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products OE
2000NissanXterra2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products OE
2000NissanXterra2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products OE
1999NissanFrontier2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products OE
1999NissanFrontier2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products OE
1999NissanFrontier2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products OE
1998NissanFrontier2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products OE
1998NissanFrontier2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products OE
1998NissanFrontier2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products OE

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.